The answer is that there are fewer than 10 unique source IPs in the results. This is correct because the `stats count by src_ip` command groups all events by each distinct value of the source IP field, then counts how many events belong to each group; the `head 10` command simply limits the output to the first 10 rows, but if the dataset contains only 5 unique IP addresses, only 5 rows can be returned regardless of the total event count. On the Splunk SPLK-1003 exam, this question tests your understanding of how `stats` transforms raw events into aggregated results, and a common trap is assuming `head` limits events rather than rows after aggregation. Remember the key distinction: `stats` creates one result per unique group, so `head` can only show as many results as there are groups. A useful memory tip is "stats shrinks, head just trims"—the number of results is determined by the grouping, not the head command.
SPLK-1003 Advanced Searching and Statistics Practice Question
This SPLK-1003 practice question tests your understanding of advanced searching and statistics. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A security analyst runs `index=network sourcetype=firewall | stats count by src_ip | sort - count | head 10` to find the top 10 source IPs by event count. The search returns only 5 results. Which of the following is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
There are fewer than 10 unique source IPs in the results.
Option D is correct because the `stats count by src_ip` command groups events by each unique source IP address and counts them. If the search returns only 5 results, it means there are only 5 unique source IPs in the dataset matching the time range and filters. The `head 10` command then limits output to 10 rows, but since only 5 groups exist, only 5 rows are returned.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The search time range is too short, so only a few events are counted.
Why it's wrong here
Even with a short time range, there could still be many distinct IPs; the issue is the number of distinct IPs, not the number of events.
✗
The sort command should be `sort - count` without space.
Why it's wrong here
The syntax `sort - count` is valid; the space is optional and does not cause missing results.
✗
The stats command should include a by clause with count in the field list.
Why it's wrong here
`stats count by src_ip` is correct syntax; no need to include count in the by clause.
✓
There are fewer than 10 unique source IPs in the results.
Why this is correct
If the number of distinct src_ip values is less than 10, head 10 returns all of them, resulting in fewer than 10 rows.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume `head 10` always returns 10 results, forgetting that `head` limits the number of output rows from the preceding command, which may already have fewer rows than the limit.
Detailed technical explanation
How to think about this question
The `stats` command in Splunk processes events in memory, creating a separate bucket for each unique value of the `by` field. The number of results from `stats ... by src_ip` equals the cardinality of `src_ip` in the result set, not the total event count. In real-world scenarios, a firewall log may have only a few source IPs if traffic originates from a small set of hosts, such as in a lab environment or during a targeted attack.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the SPLK-1003 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Advanced Searching and Statistics — This question tests Advanced Searching and Statistics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: There are fewer than 10 unique source IPs in the results. — Option D is correct because the `stats count by src_ip` command groups events by each unique source IP address and counts them. If the search returns only 5 results, it means there are only 5 unique source IPs in the dataset matching the time range and filters. The `head 10` command then limits output to 10 rows, but since only 5 groups exist, only 5 rows are returned.
What should I do if I get this SPLK-1003 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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